That darn sixth senseis killer qzq!! It cannot even be explained. I've seen them turn around on a dime to go the other way when I KNOW they didn't wind me.
As smart as they are most of the time, I bet everyone who has hunted over a few years has seen them do really dumb things to. You know like letting you take another shot when you missed the first ect.. I sorta like dumb deer on occasion